Donald Love played with Middlesbrough-owned Sunderland striker Ashley Fletcher for the Manchester United youth teams.
Sunderland fell back into the Championship's bottom three as they drew at the Stadium of Light.
The French star has been in fine form for Monaco in 2016-17.
Sunderland defender Donald Love was part of an under-23 side who lost 5-0 to Porto.
The Sunderland defender did little to justify his inclusion against the Cherries.
The Glasgow Rangers forward has been linked with a move to Sunderland and the Gers should discuss certain players heading in the other direction.
Which Sunderland players would fans not mind seeing the back of this month?
Love could feature for Sunderland against his old club on Boxing Day.
The Sunderland youngster will be hoping to kick on now.
Love played in midfield for the under-23's against Hartlepool, in a role where the Black Cats are struggling with injuries.